Friday, May 12, 2006 - 9:15 am - 4:30 pm
 
Birkbeck College 
Basement Lecture Theatre  
43 Gordon Square  
London,   WC1H 0PD  
United Kingdom 

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Meeting Highlights

The Diversity of Neural Stem Cells - Professor Jack Price - MRC Centre for Neurodegeneration Research, Institute of Psychiatry, London. Neural Stem Cells can be isolated from Adult or Fetal brain, or derived from embryonic stem cells.  Though these different sources of cells share seminal stem cell properties, they differ in other aspects of their phenotype.  Importantly, some of these isolates have the capacity to repair the damaged nervous system, for others this is less certain.  How are we to view this diversity of neural stem cell populations?  In this talk, I will present our attempts to correlate cell and molecular phenotypes, and to understand the mechanisms that drive neural stem cell diversity.


Galectin -1 – A way to repair muscle fibres? - Professor Diana Watt – Brighton and Sussex Medical School

The finding of a cell within skin that is capable of entering the myogenic lineage under certain conditions prompted us to identify a candidate factor for this conversion. Having identified the factor as galectin-1 we have gone on to determine the importance of galectin-1 in muscle determination and differentiation and how it could enhance muscle repair and regeneration following trauma and disease. Since these initial experiments we have begun to dissect out the role of galectin-1 in muscle and start to determine how it could be used to convert undifferentiated cells to the myogenic lineage thereby finding a therapeutic use for the molecule in enhancing myogenesis.

Complexity of the Human Haematopoietic Stem Cell compartment - Dr Daniel Pearce -Cancer Research, UK

The mammalian haematopoietic system is organised as a hierarchy where the majority of the cells are mature, and therefore, need to be continuously replenished from a small pool of immature progenitors.  Ultimately, the entire haematopoietic system is derived from stem cells that have extensive proliferative and differentiation capacity and give rise to all myeloid and lymphoid lineages.  Stem cells also have extensive ability to self-renew and are able to engraft recipients for long periods of time after transplantation. Progress in characterising human stem cells has been impaired by their rarity in normal haematopoietic tissue and the absence of a distinctive phenotype and functional repopulation assay. The engraftment of normal human haematopoietic cells in immune-deficient mice provides a system to develop an assay that measures the repopulating capacity of human stem cells and has allow the identification of a complexity of the stem cell compartment which will be discussed during the presentation in more details.

Identification and isolation of Human Mesenchymal Stem Cells-
Dr. Elena Jones - Leeds University

Phenotypic and Functional Characterization of Mouse Mammary Epithelial Stem Cells - Dr John Stingl - Stemcell Technologies Inc
The frequency and phenotypic properties of mouse mammary epithelial stem cells is poorly understood. To address these issues, we combined multi-parameter cell sorting and limiting dilution transplant analysis into cleared mammary fat pads to characterize a rare subset of adult mouse mammary cells that are able to regenerate the mammary epithelium. Our results indicate that there are approximately 1,400 mammary stem cells in each inguinal mammary gland of a young adult female mouse and that these cells have a CD45-/Ter119-/CD31-/CD24med/CD49fbright phenotype and are not quiescent. Mixing experiments using marked cells and single cell transplants demonstrate that a single cell can engraft a cleared fat pad. Transplantation of cells harvested from primary outgrowths into secondary fat pads demonstrate that these stem cells have the ability to undergo up to 10 symmetric self-renewal cell divisions, thereby fulfilling the requirements of a mammary stem cell.

Isolation, characterization and use of human AC133+ progenitor cells for vascular tissue repair -

Dr Pauliina Lehtolainen, University College London

 

Talk includes isolation, characterisation and knowledge of AC133+ cells and their lineage commitment towards endothelial cells and in vivo experience of their usage in tissue repair.


Additional Speakers include

  • Dr AT Collins, Univeristy of York.
  • Dr Rob Clarke, Breast Biology Group, University of Manchester, Christie Hospital (NHS) Trust
  • Dr Myrtle Gordon, Department of Haematology, Imperial College Faculty of Medicine, London
  • Identification, Isolation and Expansion of Adult Stem Cells